MasteR
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What kind of healing is that? It doesn't say that the target survived. Being buried alive doesn't mean the target is still alive; it means she was alive before she was buried or whatever happened.
It's the same kind of vague description as everything else in the newspaper. The victim could have died not only from the explosion but also from poisoning on the first night. They gave her medicine, it didn't seem to help, they buried her, and she recovered and climbed out of the grave.